Bowl brush base



FIG. 1 is a perspective view of a brush base embodying this invention, with a phantom view of a brush handle extending from the base;

FIG. 2 is a front view of the brush base shown in FIG. 1, with a phantom view of the brush handle extending from the base;

FIG. 3 is a top view of the brush base shown in FIG. 1, with a phantom view of the top of the brush handle within the base; and,

FIG. 4 is a bottom view of the brush base shown in FIG. 1.

The broken-line disclosure of the top of the brush handle in the views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a bowl brush base, as shown and described. 